<template>
  <div class="todo-container">
    <div class="todo-wrap">
      <Header :addTodo="addTodo"></Header>
      <List
        :todoList="todoList"
        :changeIndex="changeIndex"
        :removeBtn="removeBtn"
      ></List>
      <Footer
        :todoList="todoList"
        :allCompleteBack="allCompleteBack"
        :deleteAll="deleteAll"
      ></Footer>
    </div>
  </div>
</template>

<script>
import Header from "@/components/Header";
import List from "@/components/List";
import Footer from "@/components/Footer";
export default {
  name: "App",
  components: {
    Header,
    List,
    Footer,
  },
  data() {
    return {
      todoList: [
        { id: 1, todo: "苹果", done: false },
        { id: 2, todo: "香蕉", done: true },
        { id: 3, todo: "梨子", done: false },
      ],
    };
  },
  methods: {
    //接收list 组件 修改单个 选中状态的事件函数
    changeIndex(index) {
      this.todoList[index].done = !this.todoList[index].done;
    },
    //接收list 组件 删除某个的事件函数
    removeBtn(index) {
      this.todoList.splice(index, 1);
    },
    //接收header组件 新增todo 的事件函数
    addTodo(todo) {
      this.todoList.unshift({ id: Date.now(), todo: todo, done: false });
    },
    //接收footer组件 全选的事件函数
    allCompleteBack(newDone) {
      this.todoList.forEach((item) => {
        item.done = newDone;
      });
    },
    //接收footer组件 删除所有已完成的 事件函数
    deleteAll() {
      this.todoList = this.todoList.filter((item) => !item.done);
    },
  },
};
</script>

<style>
/*base*/
body {
  background: #fff;
}

.btn {
  display: inline-block;
  padding: 4px 12px;
  margin-bottom: 0;
  font-size: 14px;
  line-height: 20px;
  text-align: center;
  vertical-align: middle;
  cursor: pointer;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.2),
    0 1px 2px rgba(0, 0, 0, 0.05);
  border-radius: 4px;
}

.btn-danger {
  color: #fff;
  background-color: #da4f49;
  border: 1px solid #bd362f;
}

.btn-danger:hover {
  color: #fff;
  background-color: #bd362f;
}

.btn:focus {
  outline: none;
}

.todo-container {
  width: 600px;
  margin: 0 auto;
}
.todo-container .todo-wrap {
  padding: 10px;
  border: 1px solid #ddd;
  border-radius: 5px;
}
</style>
